Quantitative analyses of myelofibrosis by determining hydroxyproline.

Background: Myeloproliferative neoplasms (MPNs) are blood malignancies manifested in increased production of red blood cells, white blood cells, and/or platelets. Myelofibrosis is a subtype of MPNs characterized by the formation of scar-like tissues in the bone marrow due to abnormal hematopoiesis. It is considered a disease of both hematopoietic stem cells and stem cell niches.

Tea contains potent inhibitors of tyrosine phosphatase PTP1B.

Tea is widely consumed all over the world. Studies have demonstrated the role of tea in prevention and treatment of various chronic diseases including diabetes and obesity, but the underlying mechanism is unclear. PTP1B is a widely expressed tyrosine phosphatase which has been defined as a target for therapeutic drug development to treat diabetes and obesity.